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• Xuggler encoding images to video FPS issue

  1er novembre 2011, par Chris Robinson

  I've been experimenting with encoding a video from a series of images using CaptureScreenToFile.java as a basis. My output is to be an MP4 file. From 26 images, using the code as is (taking the images from a directory instead of from a screen capture obviously), the encoding video is 11s. However, if I change the framerate variable to :

  frameRate = IRational.make(1, 24);

  which I believe should result in a video of 24FPS. It does not however, (no change from the original video in fact). I experimented with changing the timeStamp variable in encodeImage() method to :

  long timeStamp = (firstTimeStamp*1000)+(i*40);

  where 0 < i < 25 to see if that would help but it doesn't. Can anyone explain to me how to encode a directory of images to a video with a framerate that I can set ?

• android ffmpeg halfninja av_open_input_file returns -2 (no such file or directory)

  20 janvier 2012, par cdavidyoung

  I have built ffmpeg for Android using the code and method described at

  https://github.com/halfninja/android-ffmpeg-x264

  using Ubuntu running in VirtualBox on windows. I then copied libvideokit.so into the Project\libs\armeabi folder of a Windows copy of the provided projects. From there I was able to run the ProjectTest from Eclipse on my Android device. I can see the ffmpeg code being executed but when it gets to the point of opening the input file it gives me the indicated error. I have noticed some discussion of this problem at

  FFMpeg on Android, undefined references to libavcodec functions, although it is listed on command line

  but the solutions have not helped since the file protocol is enabled in this build and I also tried putting "file :" in front of the filepath to no avail. For completeness I tried setting minimal_featureset=0 to enable all the defaults but this gives me the same error. Below is a snapshot of the logcat from Eclipse showing the output from Videokit with an extra call to LOGE to display the result from av_open_input_file. Any suggestions of things to try would be greatly appreciated.

  10-23 11:57:33.888: DEBUG/Videokit(4830): run() called
  
  10-23 11:57:33.888: DEBUG/Videokit(4830): run passing off to main()
  
  10-23 11:57:33.904: DEBUG/Videokit(4830): main(): registering all modules
  
  10-23 11:57:33.927: DEBUG/Videokit(4830): main(): registered everything
  
  10-23 11:57:33.927: DEBUG/Videokit(4830): main(): initting opts
  
  10-23 11:57:33.943: DEBUG/Videokit(4830): main(): initted opts.
  
  10-23 11:57:33.943: ERROR/Videokit(4830): ffmpeg version N-30996-gf925b24, Copyright (c) 2000-2011 the FFmpeg developers
  
  10-23 11:57:33.943: ERROR/Videokit(4830):   built on Oct 21 2011 13:54:03 with gcc 4.4.3
  
  10-23 11:57:33.943: ERROR/Videokit(4830):   configuration: --enable-cross-compile --arch=arm5te --enable-armv5te --target-os=linux --disable-stripping --prefix=../output --disable-neon --enable-version3 --disable-shared --enable-static --enable-gpl --enable-memalign-hack --cc=arm-linux-androideabi-gcc --ld=arm-linux-androideabi-ld --extra-cflags='-fPIC -DANDROID -D__thumb__ -mthumb -Wfatal-errors -Wno-deprecated' --disable-everything --enable-decoder=mjpeg --enable-demuxer=mjpeg --enable-parser=mjpeg --enable-demuxer=image2 --enable-muxer=mp4 --enable-encoder=libx264 --enable-libx264 --enable-decoder=rawvideo --enable-protocol=file --enable-hwaccels --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-filter=buffer --enable-filter=buffersink --disable-demuxer=v4l --disable-demuxer=v4l2 --disable-indev=v4l --disable-indev=v4l2 --extra-cflags='-I../x264 -Ivideokit' --extra-ldflags=-L../x264
  
  10-23 11:57:33.943: DEBUG/Videokit(4830): main(): parsing options
  
  10-23 11:57:33.943: DEBUG/Videokit(4830): parse_options has 4 options to parse
  
  10-23 11:57:33.951: ERROR/Videokit(4830): opt_input_file av_open_input_file /mnt/sdcard/fun/snap0000.jpg -2 
  
  10-23 11:57:33.951: ERROR/Videokit(4830): /mnt/sdcard/fun/snap0000.jpg: No such file or directory
  
  10-23 11:57:33.951: ERROR/Videokit(4830): ffmpeg_exit(1) called!

• Undefined Reference - ffmpeg on android ndk

  28 décembre 2012, par Gabriel Simões

  I´ve spent many hours trying to figure out why I still get "undefined reference" when trying to link to ffmpeg.
  I´ve already read most if not all posts and sites about the subject, so I think I´m missing something little here and I hope you can help me.

  What I have :

  I´m using windows 7 + cygwin + crystax r4.
  I´ve compiled FFMPEG using RockPlayer's ffmpeg source plus some modifications I did (only to include / exclude demuxes, decoders, encoders, ...)
  After compiling, I get :

  • a new folder named armv5te, which includes :
  • a folder named "include" with all folders for each libs' .h
  • a folder named "lib" which includes all libs' .a
  • a shared library named libffmpeg.so (checked soname and it is libffmpeg)

  The shared library isn´t also placed on project/lib/armeabi/libffmpeg.so

  After compiling I tried to compile my project and link it. While my .cpp compiles ok, I get many undefined references.

  here is my build script :

  NDK=/cygdrive/c/Gabriel/Desenvolvimento/SDKs/Android/android-ndk-r4-crystax
  
  PLATFORM=$NDK/build/platforms/android-8/arch-arm/
  
  PREBUILT=$NDK/build/prebuilt/windows/arm-eabi-4.4.0
  
  
  
  
  
  function build_one
  
  {
  
  
  
  ./configure --target-os=linux \
  
      --prefix=$PREFIX \
  
      --enable-cross-compile \
  
      --extra-libs="-lgcc" \
  
      --arch=arm \
  
      --cc=$PREBUILT/bin/arm-eabi-gcc \
  
      --cross-prefix=$PREBUILT/bin/arm-eabi- \
  
      --nm=$PREBUILT/bin/arm-eabi-nm \
  
      --sysroot=$PLATFORM \
  
      --extra-cflags=" -O2 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums  -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
  
      --disable-shared \
  
      --enable-static \
  
      --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -nostdlib -lc -lm -ldl -llog" \
  
      --disable-stripping \
  
      --disable-debug \
  
      --disable-symver \
  
      --disable-ffprobe \
  
      --disable-devices \
  
      --disable-avfilter \
  
      --disable-swscale \
  
      --disable-ffplay \
  
      --disable-ffserver \
  
      --disable-network \
  
          (many more ...)
  
      --enable-asm \
  
      $ADDITIONAL_CONFIGURE_FLAG
  
  
  
  #make clean
  
  make  -j4 install
  
  
  
  $PREBUILT/bin/arm-eabi-ar d libavcodec/libavcodec.a inverse.o
  
  
  
  $PREBUILT/bin/arm-eabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -soname libffmpeg.so -shared -nostdlib  -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a libavutil/libavutil.a  -lc -lm -lz -ldl -llog  --warn-once  --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-eabi/4.4.0/libgcc.a
  
  
  
  }
  
  
  
  #arm v5
  
  CPU=armv5te
  
  OPTIMIZE_CFLAGS="-marm -march=$CPU"
  
  PREFIX=./android/$CPU 
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one

  Here is my android.mk :

  LOCAL_PATH := $(call my-dir)
  
  
  
  #declare the prebuilt library
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE := ffmpeg-prebuilt
  
  LOCAL_SRC_FILES := $(LOCAL_PATH)/ffmpeg/android/armv5te/libffmpeg.so
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/ffmpeg/android/armv5te/include
  
  LOCAL_PRELINK_MODULE := true 
  
  include $(PREBUILT_SHARED_LIBRARY)
  
  
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE    := audiocodec
  
  LOCAL_SRC_FILES := ffmpeg_audio.cpp
  
  LOCAL_SHARED_LIBRARY := libffmpeg
  
  LOCAL_C_INCLUDES := $(LOCAL_PATH)/ffmpeg/android/armv5te/include
  
  LOCAL_LDLIBS    := -llog -ljnigraphics -lz -lm $(LOCAL_PATH)/ffmpeg/android/armv5te/libffmpeg.so
  
  include $(BUILD_SHARED_LIBRARY)

  The result :

  Compile++ thumb: audiocodec <= /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFM
  
  PEG/jni/ffmpeg_audio.cpp
  
  SharedLibrary  : libaudiocodec.so
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
  
  ocodec/ffmpeg_audio.o: In function `Java_gabriel_audioslower_pro_ffmpegDecoder_r
  
  eadSamples':
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:172: u
  
  ndefined reference to `avcodec_decode_audio3(AVCodecContext*, short*, int*, AVPa
  
  cket*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:178: u
  
  ndefined reference to `av_read_frame(AVFormatContext*, AVPacket*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
  
  ocodec/ffmpeg_audio.o: In function `Java_gabriel_audioslower_pro_ffmpegDecoder_s
  
  eekToPosMS':
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:147: u
  
  ndefined reference to `av_rescale_q(long long, AVRational, AVRational)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:150: u
  
  ndefined reference to `av_seek_frame(AVFormatContext*, int, long long, int)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:151: u
  
  ndefined reference to `avcodec_flush_buffers(AVCodecContext*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:152: u
  
  ndefined reference to `av_read_frame(AVFormatContext*, AVPacket*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
  
  ocodec/ffmpeg_audio.o: In function `Java_gabriel_audioslower_pro_ffmpegDecoder_c
  
  loseFile':
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:82: un
  
  defined reference to `avcodec_close(AVCodecContext*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:83: un
  
  defined reference to `av_free(void*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:84: un
  
  defined reference to `av_close_input_file(AVFormatContext*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
  
  ocodec/ffmpeg_audio.o: In function `Java_gabriel_audioslower_pro_ffmpegDecoder_o
  
  penAudioFile':
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:37: un
  
  defined reference to `av_open_input_file(AVFormatContext**, char const*, AVInput
  
  Format*, int, AVFormatParameters*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:44: un
  
  defined reference to `av_find_stream_info(AVFormatContext*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:52: un
  
  defined reference to `avcodec_find_decoder(CodecID)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:60: un
  
  defined reference to `avcodec_open(AVCodecContext*, AVCodec*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:67: un
  
  defined reference to `av_malloc(unsigned int)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:70: un
  
  defined reference to `av_read_frame(AVFormatContext*, AVPacket*)'
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
  
  ocodec/ffmpeg_audio.o: In function `JNI_OnLoad':
  
  /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:25: un
  
  defined reference to `av_register_all()'
  
  collect2: ld returned 1 exit status
  
  make: *** [/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeab
  
  i/libaudiocodec.so] Error 1

  Something interesting is that some functions from ffmpeg, as av_register_all(), do now show up on the list of undefined references.

  Any ideas on what I can do to fix it ? I´ve spent 3 days trying to make things work ..
  Thanks !